Speed type magnetoelectric seis

A geophone and magnetoelectric technology, applied in the direction of seismic signal receivers, etc., can solve the problems of difficult processing and assembly, large noise and harmonic distortion, and large volume of AlNiCo magnets, and achieve easy assembly, Low distortion, reliable effect
CN101089656AInactive Publication Date: 2007-12-19WEIHAI SUNFULL GEOPHYSICAL EXPLORATION EQUIP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WEIHAI SUNFULL GEOPHYSICAL EXPLORATION EQUIP
Publication Date
2007-12-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

A magenetoelectric seismic detector of speed type is prepared as setting yoke iron at top and bottom ends of Sm-Co magnetic steel and arranging shell at external of said magnetic steel, setting top and bottom covers at top and bottom of shell, arranging coil system formed by two cols and coil framework between shell and Sm-Co magnetic steel / yoke iron and using two spring plates set on top and bottom yoke irons to support said coil system. Its method for detecting earthquake is also disclosed.
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Description

technical field

[0001] The invention relates to a geophone, in particular to a velocity type magnetoelectric geophone. Background technique

[0002] We know that the extraction of signals in geological exploration in petroleum and coal industries is done by detectors. Existing detectors include magnetoelectric speed sensors, displacement sensors, acceleration, piezoelectric, capacitive, piezoresistive and other sensors. At present, the commonly used geophone is a magnetoelectric speed sensor, and its structure is mainly composed of alnico magnet, coil, spring leaf, shell, upper cover, lower cover, yoke, electrode, damper and so on. The yoke is in the shape of a hat, fixed on both sides of the magnetic steel, and forms a magnetic circuit with the shell to gather magnetism. The enameled wire coil is wound in the magnetic gap formed by the magnetic steel, the yoke and the shell, and is supported by the upper and lower spring pieces. When the outside world vibrates, the coil r...

Claims

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